GARbro-mirror/ArcFormats/ScenePlayer/AudioPMW.cs

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//! \file AudioPMW.cs
//! \date Thu Apr 30 21:22:48 2015
//! \brief ScenePlayer compressed WAV file.
//
// Copyright (C) 2015 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System.ComponentModel.Composition;
using System.IO;
using GameRes.Compression;
namespace GameRes.Formats.ScenePlayer
{
[Export(typeof(AudioFormat))]
public class PmwAudio : WaveAudio
{
public override string Tag { get { return "PMW"; } }
public override string Description { get { return "ScenePlayer compressed WAV audio"; } }
public override uint Signature { get { return 0; } }
public override SoundInput TryOpen (Stream file)
{
int first = file.ReadByte();
if ((first ^ 0x21) != 0x78) // doesn't look like zlib stream
return null;
file.Position = 0;
using (var input = new XoredStream (file, 0x21, true))
using (var zstream = new ZLibStream (input, CompressionMode.Decompress))
{
SoundInput sound = null;
var wav = new MemoryStream();
try
{
zstream.CopyTo (wav);
wav.Position = 0;
sound = new WaveInput (wav);
}
finally
{
if (null == sound)
wav.Dispose();
else
file.Dispose();
}
return sound;
}
}
public override void Write (SoundInput source, Stream output)
{
using (var wav = new XoredStream (output, 0x21, true))
using (var zstream = new ZLibStream (wav, CompressionMode.Compress, CompressionLevel.Level9))
base.Write (source, zstream);
}
}
}